Ham pumping



Dec. 22, 1953 B. T. HENSGEN ETAL A 2,553,247

HAM PUMPING Filed Sept. 6, 1952 7 Sheets-Sheet l FIG. l

BERNARD HENSGEN HOWARD G. REICHEL INVENTORS Y pif@ ATTORNEY Dec. 22, 1953 B. T. HENsGEN Erm. 2,663,247

HAM PUMPING l Filed sept. 6, 1952 7 sheets-sheet 2 FIG. 2

BERNARD TI HENSGEN HOWARD REICHEL INVENTORS ATTORNEY Dec. 22, 1953 a. T. HENSGEN ETAL 2,663,247

BERNARD T. HENSGEN T 8l HOWARD G. REICHEL IN V EN TORS BYQK,

ATTORNEY FIG. 4

Dec. 22, 1953 B. T. HENSGEN l-:TAL 2,663,247

HAM PUMPING Filed Sept. 6, 1952 7 Sheets-Sheet 5 BERNARD T HENSGEN- H AR R l EL 0W D MIL-@95kg ATTORNEY Dec. 22, 1953 B, T, HENSGEN ETAL 2,663,247

HAM PUMPING Filed Sept. 6, 1952 7 Sheets-Sheet 6 BERNARD T. HENSGEN,

8x HOWARD G. REICHEL Y @Xi/g ATTORNEY Dec 22. 1953 B. T. HENSGEN ETAL 2,563,247

HAM PUMPING Filed sept. 6, 1952 7 sheets-sheet IGI | I i /i I |67 l 4| l l: I l Jl FIG. IO

F IG. 9

BERNARD ET. HENsGEN HOWARD G. REICHEL INVENTORS' ATTORNEY Patented Dec. 22, 1953 HAM PUMPING Bernard T. Hensgen and Howard G. Reichel, Chicago, Ill., assignors to cago, Ill.,

Swift & Company, Chia. corporation of Illinois Application September 6, 1952, Serial No. 308,272

12 Claims.

The present invention relates to an apparatus for controlling power actuated apparatus in response to the weight indications of a scale.

Those skilled in the art will appreciate from the following description the numerous and varied uses which the present invention has in the eld of weighing. One application of the invention is in the eld of curing meat products, such as hams, where a curing liquid is pumped into the meat, citen through the veins thereof, and an explanation of the application of the invention to that field will illustrate the manner in which the invention may be employed in numerous applications.

For various reasons, such as uniformity of end product, the amount oi curing liquid or pickle inserted into the ham is, by weight, a predetermined percentage or function or the weight of the ham, before the pickle is added. The present practice is to make the fluid line connections to the ham as by means of vein clamps, needles or the like, and to place the ham upon the scale. rEhe operator reads the weight oi the ham from the scale dial and consults a chart `which tells him what should be the total Weight of the ham after the desired percentage of pickle has been added. then opens valves in the fluid lines which have been connected to the ham to allow the pickle to be injected into the ham and closes the valves after the Weight of the ham reaches the weight which the operator obtained from his study of the chart.

Such a practice has a number of disadvantages, particularly in the human errors that the opera- 'tors make from time to time. The operator may err in reading the true weight of the ham, in remembering the indicated Weight, in examinn ing the correct portion corresponding to the weight remembered, in reading the desired total r it from the chart, in remembering the desued total weight for the ham plus pickle, or in manually shutting oil the pickle flow at the proper time. Small errors are often not of any particular consequence, but larger errors may result in changed flavor of the end product, or in the end product being insuliciently cured to have the required keeping qualities tor the conditions under which it will be handled subseq ent to the curing operation. Obviously, the wei l ing, computation and reweighing operations as performed in the manner described are time consuming.

rEhe principal object of the present invention is to provide an apparatus which will perform the above operations automatically and eliminate the human factor involved in the steps of adding a given percentage, by weight, of one product to another.

A. principal advantage of the invention is that existing scale apparatus readily may be remodeled to incorporate the invention. This remodeling is primarily the addition of new equipment and requires only minor changes in the original parts of the scale. Thus to employ the invention it is not necessary to start with completely new equipment, and there is no loss due to the obsolescence of existing equipment. In some instances the existing scale case is suinciently large to accommodate the new apparatus, or at least the portions thereof that of necessity must be in actual physical proximity to the existing scale weight indicator.

A further advantage of the invention is that it is sturdy, and relatively uncomplicated. By reason of these facts the initial cost is moderate and the maintenance is nominal. In addition, expert technicians are not required to do such maintenance Work as may be necessary from time to time.

A second object of the invention is to provide an apparatus of the type described which may be made as accurate as needed for any given operation. A principal factor in the attainment of this object is that no additional load is placed upon the operation of the original scale mechanism. This lack of loading or drag upon the original scale means that the scale is just as ac curate after installation of the additional apparatus of the invention as it was prior to the time any modications were made. Furthermore, the factors of simplicity and sturdiness previously mentioned enter into a completed device which will have Whatever accuracy may be desired.

In some instances in cutting out a ham the butchers may out it too short and as a result have two veins at the butt of the ham rather than the usual one, i. e. the one that communicates with the two further in the ham in the usual case. In such an instance, the usual practice is to put given proportions of the total amount of the pickle into each of the two veins; nfor example, 60% of the total amount of the pickle may be put in the vein of the cushion side of the ham, while 49% of the total amount of the pickle may be put in the vein on the flank side of the ham. If the butchers folios',7 their instructions as to cutting out a ham, such a problem will not occur, but occasionally due to error or otherwise a ham will be introduced into the processing line having such a condition, which condition is referred to as a aoeacfiv split vein. While the apparatus of the present invention automatically inserts the desired percentage of pickle into the ham through a single vein connection, another object of the invention is to provide means for the division of the pickle between the two veins should an occasional split vein ha'n he encountered during the processing operaticV i.

With hams, for example, there may be governmental or other requirements that necessitate the making of a record of the green or unoured weight of the ham. Thus, a further object of the invention is to automatically r cord the initial weight of the ham before any pickle is in jected therein.

An additional object of the invention is to provide apparatus which after inserting the amount of pickle determined by the weight of the harn into the harnrwill then inject a fixed quantity of pickle into the cushion side of the ham. in accordance with the practices of some rocessors. Some packers follow the practice of inserting a :fixed quantity of pickle, for example V2, oz., into the cushion of the ham through Yan injection needle, in addition to the quantity or" piclrle inserted through the veins, which latter Quantity is determined cy the initial weight ci the ham. Such a second injection operation is automatically performed by the instant invention.

Further obj cts and advantages will hccoine apparent from. the following description talzen in conjunction with the drawings in which:

Figure 1 is an isometric view of a scale of the type often used in the pumping of hams, into which scale the instant invention has been incorporated,

`figure 2 is a sectional elevation of a portion of the scale of Figure l, illustrating an embodiment of the present invention,

Figure 3 is a view taken at line 3-3 of Figure 2,

Figure e is the wiring diagram of the electrical control apparatus the invention,

Figure 5 is a schematic diagram of the deF tectors utilized in the described embodiment of the invention,

Figures 6,7 and 8 are diagrammatic views of the face of the scale of Figure l, utilized in describing the operation or the disclosed embodiment, and

Figures 9 and lo are diagrammatic illustrations y of an alternative form of a detector.

The scale generally, 2li, illustrated in Figure l is more or less typical of a dial scale having a platform 2l upon which the product, in the iilus trated case a ham 22, is placed to be weighed. The scale has a dial face 23 upon which the weight is shown by an indicator 2li which rotates along a circular path about the axis of the shaft upon which the indicator is mounted. The mechanism by which the indicator Ei is moved in response to a weight placed upon the weight supporting member, the platform 2l in the illustrated embodiment, is conventional and forms no part of the instant invention. A supplemental case 25 has been added to the rear of the housing 2d, which housing carries the dial` and indicator. The` case 2E covers the additional structure which has been added in accordance with the teachings of the instant invention.

In accordance with the usual practice, a iiexihle conduit 2S which is fed with pickle from a pipe 29 is connected to the vein of the ham as by means of a vein clamp. An injection needle on the end of a secon-d iiexible conduit 3i? has bee inserted into the cushion side of the ham for il the induction or" a fixed quantity of pickle, as previously mentioned. The injection needle and conduit 30 are fed with pickle through a pipe 3 i.

Attached to the shaft 33 which supports and rotates indicator 2li about axis Sil is a weight responsive member in the form of a supplemental arm 35. Because of its connection with shaft $53, arm 35 rotates about axis in response to a weight being placed upon platform 2| to the same extent as does indicator 2d, and thus in eifect is in itself an indicator, with the angular position of the arm 35 in its path or" rotation upon axis 3s being representative of the Weight of the platform.

To the rear of indicator arm S5 and projecting downwardly therefrom are a pair of small metal flags 3'! and 38 which cooperate with a pair of detector heads 39 and til, respectively, in the control of the operation of the brine addition and computing mechanism.

The mounting means for the detector heads include a pair of arms l2 and 3, respectively. Arm 52 is secured to a sleeve iournaled in frame (i5. A shaft il is mounted within the central opening of sleeve is with arm i3 being attached to the outer end of the shaft. Shaft il and sleeve Il are mounted to rotate independently of each other and are each concentric but independent of shaft 33 so that all three are rotatable about axis 3d.

At the inner end, shaft 137 is attached to the output of a speed reduction gear box it driven by an electric motor generally iid. A gear 5l attached to shaft il drives a second gear 52 attached to an idler shaft 53 journaied in frame d5. A third gear 5d is attached to shaft 53 to mesh with and drive a gear 55 secured to the inner end of sleeve iid.

It will be apparent that in the paths of rotation about axis Sli every angular position of indicator 35 will se representative of a particular weight on platform 2|, which weight is shown on dial face 23 by indicator 2d. Similarly the angular positions of arms i2 and is about axis te will correspond to angular positions of indicator :is about the axis, and will be representative of specific weights on the platform. The sise of the gears is such that at all times arms i2 and l will be at angular positions in their respective paths of rotation, corresponding to two weights upon scale platform 2l, one of which weights is a given percentage greater than, or function of, the other of the weights. For example, if it is desired that the quantity of pickle added to the meat is 10% of the weight of the meat, the angular position of arm will at all times repre sent a weight which is 1.6% greater than the weight represented by the angular position of arm t3. If gear 5i is a {i6-tooth gear, gear 52 is a -tooth gear, gear 55 a {S3-tooth gear, and gear 55 a 63-tooth gear, a lil% differential will he obtained between the positions of arms 2 and d3. The position of both arms should coinn cde at the Zero weight point on their paths of rotation.

ll/iotor it@ is a motor ing a cornmon shaft. One held turns the 'motor armature in one direction while the second field ti turns the motor armature in the other direction. As will hereinafter be described in the illustrated embodiment, the rest position of the two arms i2 and it is adjacent the portions of their paths corresponding to the maximum weight on the scale platform, and as the device is operated the two arms move toward the portions of their path corresponding to the minimum Weight on the scale platform. For the purposes of convenience and description, this movement of the two arms $2 and 33 toward the minimum Weight 1d of their paths of movement Will be referred to as a forward movement, While the movement in the opposite direction, i. e. toward the maximum weight portions i the tivo paths will be referred to as the reverse movement. Similarly, We will refer to .iielcl as the forward field, i. e. the field that when energized will cause the tivo arms 132 and et? to move in a forward direction, and field el will be referred to as the reverse iielo, i. e. the one that when energized will cause the two arms 42 and 43 to move in tlie reverse direction..

A rearward extension of shaft has three cams ancl li-i attached to it, which cams aotuate three snap-acting switches Si and Se respectively.

Tire two detectors generally and ll are idena-l and include the .-tector heads 5E! and dil, respectively, previously mentioned. A description oi detector lil illustrated in Figure 5 will Suince to explain the operation oi" each of the detectors. Beca-use of and mounting conditions, tlie detector head 3Q is physically separated from the remainder of the detector structure, but as -vill he apparen" from ti e description it is in eireet a single unit and given the necessary space requirements could. be carried` on the mounting means therefor as unit.

A power transformer l2, the primary it of which connected to a suitable source oi electricity, provides the power through a pair of secondary windings 'lll and 'it for the operation or" a dual triode tuoe Tube lt .has a pair oi pia-tes le anti a pair oi correspendingr grids @il and 3i, respectively, and a pair of corresponding cathodes 2 and. respectively. A heater 525 is connected to secondary coil lil.

The iirst triode, comprising elements el and functions as an oscillator with the outn put from plate lil energizing coil il? and being iecl back to cathode S3 through coil The output of the triede is supplemented oy the output of the other triocle to provide a positive action to the output relay. The two valves work together because oi the commen grid conne@ obtained through the internenection of resistor lli? and conr en arios Si? fl Si wiiile var hl EI as a sensitivity control. Coils mounted on arni i2 so as to of .indicator between the '.,riiii.,.can.t enange Detector includes a single pole, double throw relay generally having an actuating coil Similarly, detector 'll includes pole, clouble throw relay generally @il having ctuating coil S7 (see Figure 4).

The Brown instruments Division of Minneapn oli-s Honeywell Regulator Company produce a rlevice which referred. to as an Electr--Vane Controller, type 353843-2, which may he utilized by reconstructing to separate tlie detector head from the remainder of the unit. A very sirf lar detector is described on 53 of l-anfibool: of Industrial and Electronic Circuits by Markus and. Zelf` il, 1948, McGraw-Hill Book Company, the disclosure of which is included herein by reference.

Reierrini3F now to Figure 4, a series of seven relays lill through lill', respectively, are einployed. The majority of the extern l connections are made to a series of l2 binelin through 22, respectively. In acidi three cam-operated snap-aeting tc'nes effi, il? and @8, previously mentioned, a nioinentary contact starting switch l 24 and. a svfitc i i vein operation are employed.

Referring brieily to Figure l.. that solenoicl-operated valve l in line 23 to control the flow oi the 'e vein conduit A. second solin ralve 128 is similarly utilized in the xefl o ount oi pickle injecte ion side of the lia-rn through co val es i2? and i255 are spring l v ll norme ly einen solenoid1 energized.

it the start of cycl source or" electrical supply.

Tne position or the indicator i enel of the scale dial a` insti-at and indicator' arrn '5' likewise th end of its path ci travel. The tiro S3 are at the high weight or r paths oi travel. The Weiff'rrt the on the scale rotates indicator around the cial Si to a point oorresoonciing to the weight tine weight oi the conduits Eil air contents thereof,

and 3e attached. .le the cycle is erator momentarily closing to energize the coil ot relay o' the normally closed coni. the energif'ing of the coil through the coil of ay lill' to reset into the position illust The closing of the normally opeeel co .,taots of relay lili creates a circ .it from binding post H5 through the right-lia-nclI contact ci the overrun stop switch Sl, the motor forward. iield the normally closed contacts of relay l the normally opened contacts of relay lili, the normally closeo1 contacts of relay e5 of detector il, the normally closed contacts of relay to einfling,T post l 5G. The energizing of inotor iom'arri field 63 starts arms 2 and 'lil moving in a forward direction indicated by arrow 33 in Figure 6.

The closing of tlie normally opened contacts of relay Lil energizes the coil of relay i522 through a circuit commencing with binding post H5, the coil of relay EQ2, the normally closed; contacts of relay the normally penes?. conn taots of relay lill, the normally closed. uontacts of relay Se, the normally closeo. Contact;` of re" lay ille to binding post llt. The energizing o the coil of relay M2 closes tl'ie contacts thereof to short out a. portion of the circuit or forward. motor field et and the coil ci relay l-SZ, which portion comprises the normally closed contacts of relay 63 and the normally openssl contacts of relay lill so that the release of the starting switch ld and the relaxation or" relay alli-i will not deenergize either the motor field @il nor the coil ot relay it?.

The initial movement of the motor in turning arms l2 and de in the forward direction also turns the cams on shaft 53. The movement of cams 63 and i553 actuates switches d5 and 58 to the opposite positions from those shown in Figure 4, i. e. switch b closes and switch 58 moves from the top Contact to the lower contact. The green light i3d which had been energized by the original position of the light switch E53 is turned out by the movement of the switch and the red light is turned on by the movement .of switch 'd8 to the lower contact thereof.

Should .a failure occur and detector l! not stop the motor iii when detector head @lli reaches indicator 35, as is hereinafter described, so that the two arms i2 and i3 continue their movement toward the low weight end of their path of travel, switch Fil' would be actuated by cam lili as the two arms approach the low weight end oi their path of travel to open the circuit through the motor forward field iii to prevent an overdrive which might break some of the mechanism.

When detector head reaches indicator 35 (the position illustrated in Figure 7), nag 38 passes between the two coils or the detector head to actuate the detector relay gli. The breaking of the normally closed contacts or relay t opens the circuit through both the coil of relay MEE and. the motor forward armature Si? to stop the motor and deenergize relay At the same time the normally opened contacts of relay Sii of the detector il are closed to complete a cirl cuit from binding post SI5 through the lower contact of light switch 63, the normally closed contacts of relay @it ci detector it, the coil of relay ID3, the normally opened contacts of relay QS, the normally closed contacts of relay itil to binding post llt.

The energizing of the coil oi relay H33 energizes solenoid i, energized by a circuit from binding post H5 through the lower contacts of the light switch 5S, the lower contacts of relay lil, solenoid lh, the normally opened contacts of relay m3, the normally closed contacts of relay iti to binding post il. Closing the normally opened contacts of the coil of relay ict also creates a holding circuit through that coil from binding post l i5 through the light switch, the normally closed contacts of relay t5, the Ycoil or relay the normally opened contacts ci relay iFiS, the normally closed contacts of relay iiil to binding post lid.

rihe energizing oi relay it also opens the normally closed contacts of that relay, which contacts are in the starting circuit, as previously described, through the normally opened contacts ci relay lei, so that the pressing of the starter button 521% will not produce any malfunction of the apparatus.

When valve i2? was opened by the energizing of solenoid it, pickle commenced to flow into the ham through conduit 28. The increase in weight oi the ham due to the addition of the pickle thereto commences indicator 2d again moving toward the high weight end oi the dial 23. This continues until flag 3l passes between the coils of detector head 3Q of detector i9, which position is illustrated in Figure 3. As has previously been described, the passing of the ag between the coils actuates the detector to change the position .of relay iid. It will be remembered that the circuits oi both solenoid lili? and the normally closed ci coil :of relay it passed through the `normally closed contacts of relay Sil and the breaking oi those 4normally closed contacts allows the pickle valve to `close to stop the addition oi pickle through conduit 28, and also releases relay it,

At the same time the normally opened contacts of relay El@ are closed to create a circuit from binding post HE through the coil ci relay ltd and a separate -branch through the motor reverse iield 6l, to the reverse stop switch 6G, the upper normally closed contacts of relay it, the normally opened contacts of relay Sii, the lower contacts vof light switch 68 to binding post H5. When the normally opened contacts of relay Iil are closed by reason of the energizing of the coil thereof, the portion of the foregoing circuit which included the normally opened contacts of relay Sil and the light switch 58 is short-circuited so as to lock in the relay Hill and maintain the motor reverse iield 6I energized.

At the same time that relay itil and the field El were energized, the coil of relay les was ener gized through .a circuit from binding post lit, the coil of relay lli, the upper normally closed contacts of relay lil', the normally opened .contacts of the relay el of detector it, the lower contact of light switch 653 to binding post lit. Energizing the coil of relay m5 closes the normally opened contacts thereof to complete a circuit through the solenoid I3@ or the cushion pickle valve 123 and the coil of relay lill as iollows: from binding post llc through the solenoid i3d, the normally opened contacts of relay it and trom binding post IIE through the coil of relay icl to the normally opened contacts oi relay il, from the contacts of relay lcd to the normally closed contacts of relay liil to binding post lili.

Relay iEi'i is a combination slof: and rastacting relay. This is achieved by connecting the actuating plunger |39 to a dashpot ille so that the plunger moves in slowly against the resistance of the dashpot. A crosspiece lili immediately above the moving arm of the normally opened contacts of relay ici pulls those contacts closed almost immediately after the energizing of the coil of relay lill. Similarly, the crosspiece Illi that actuates the moving arm of the normally closed contacts of the relay is spaced a substantial distance from that arm so that the normally closed contacts are only opened after a time delay has occurred from the instant or the energizing of the coil of relay lill. The eiltent of the time delay is regulated by the changing rate at which the dashpot it@ allows the plunger E39 to be pulled in.

The energizing of the coil oi relay lill thus immediately closes the normally opened contacts of that relay to create a holding circuit from binding post l l5 through the coil of relay lill', the normally opened contacts of relay icl, the normally closed contacts oi relay iti to binding post H5.

As has previously been mentioned, the closing of relay HB5 creates a circuit through solenoid |30 of valve t28 through the normally closed contacts of relay Ici. At the end or" the time delay period, crosspiece m2 on plunger ISS opens the normally closed contacts to break that circuit and close valve 128.

The pressure applied to the pickle entering pipe 3l is maintained at a constant amount. One method of doing this is to maintain a constant head in an open pickle supply tank. An orifice (not shown) is .provided in pipe 3i with the dimensions of the orifice being such that with the constant pressure head the desired quantity of pickle will pass through the orice and thence through conduit 3i! into the cushion side of the ham in the length of time between the energizing of the coil of relay lill and the time when the nornially closed contacts of that relay are opened.

When the coil of relay |84 was energized as previously mentioned, the normally closed contacts thereof are opened to prevent the energizing of the coil of relay itil by an actuation of starting switch from producing a circuit through either relay |92 or the inotor forward neld 63.

During the period of time in which additional pickle was being added to the ham by reason of valve S23 being open, the reverse field 6i was energized to cause the two arms 42 and to be moved bach toward their initial position, the direction of movement being indicated by arrow itl!! in 1il'igure 8. When the two arms reach their initial position, cani E33 opens switch (it to stop the motor lle, and to deenergize the coil of relay les. At the same time, earn actuates switch 53 to turn oii the red light |35 and to relight the green light |35.

Since relay le? was locked in, it remains energized until the starting switch i2@ is again closed to open the normally closed contacts of that relay and break the circuit through the coil of relay lill.

In the few cases where the ham will have a split vein, the flexible conduit 28 is initially connected to the vein on the cushion side of the ham. After the .bam is placed on the scale, the starting button 24 is pressed and the cycle is allowed to start in the customary way. Meanwhile, the operator notes the weight oi the ham as indicated by the position of indicator 24 and by consulting his chart notes what the weight of the ham should be after a given percentage, say of the total amount or the pickle, is added to the After the device has cornmenced adding the pickle to the ham, the operator watches for the indicator 24 to turn to the weight which he obtained from the chart as being the weight of the ham plus 60% of the pickle.

When the indicator reaches that weight, the operator closes switch ille to energize the coil of relay Ille and open the normally closed contacts thereof. rlhe opening of these contacts breaks the circuit through the solenoid |23 of the pickle valve stops the iiow of pickle.

At the saine time the circuit is opened through the normally opened contacts or" relay 94 of detector 'le so that should the scale be disturbed during the changing of the vein connection, the actuation of the relay 94 will not cause the reversing held '6i to be energized and return the apparatus to the starting position. While switch No remains closed, the operator removes the vein clamp from the vein on the cushion side and transfers it to the vein on the flank side or" the harn. Switch M6 is then opened closing the contacts oi relay to restore the circuits for the completion of the remainder of the original cycle.

lf the device is constructed so that the operator can see through dial face 23, either by means of apertures ll or transparent windows, etc., so that the operator can note the position oi indicator is with respect to arms vll2 and 43, it will be possible for the operator to estimate when indicator 2li has moved 60% (or proportion as may be such other desired for the ainount oi the total pickle to be placed in the cushion vein) of the distance between the two arnis. After some experience, the operator may become quite proiicient in estimating this amount or" nievement with considerable accuracy. This will avoid the necessity oi' the operator consulting a chart and will speed up the operation.

Figures 9 and lo illustrate an alternative form of a detector. n this structure the detector generally its cooperates with a light itil to signal the correct positioning of the a"r-s @i2 or i3 with respect to indicator l`etector IS includes a photoelectric cell EEE, a relay i523 and an ampliiier lil/l connected to actuate relay |63 in respo to a strong beam of light falling upon oeil 1&2. Relay will replace relay 9d of detector or relay 96 of detector ll.

Light iti and ampli: its are connecte-o. to a suitable source or electric power at binding posts te and iii-l. `i is mounted on indicator Light Fc while cell Sil detector is mounted on arm fit (or til as the case n v.y be) racing iight l ti. As is known to those skilled in the art, suitable rnasks (not shown) across the liront or" light itl, cell or both, may be employed to narrow the held in wh actuation of relay will occur. Thus, whe light ce of the detector, relay will be actuated to stop the movement oi the detectors or to stop the ilow of pickle as the case may be.

In instances where it is desired to autom tically record the green weight th device is provid with a wei it rec paratus, genli, including wheel ill ha* ng suitable in thereon. Cooperating with wheel ill is a printing platen mounted on the armature oi a solenoid llt. A guide lli-l entends through ing the lace oi" the and lo., dial to provide an opening thrcu a printing tween wheel ill and platen lli?.

Wheel lll is secured to shaft l is, journaled in a pair of support brackets llll. Also attached to shaft lll is a p.. on i553 which is connected to a like pinion Sl means of a chain .finion lBi is attached to shaft so that the rotation of the wheel lli duplicates the rotation ci ari The indicia on wheii l t the point opposite platen lli at an* iven instant corresponds to the weight repres t by th osition of arm in its path of l be seen iroin Figure 4, solenoid i in parallel with 11 4weight shown by the indicia `onlthe portion of 'the wheel opposite the platen.

The foregoing description is for the purpose of complying with the requirements of 35 U. S. C. *112, and should not be construed as imposing unnecessary limitations upon the appended claims. From the foregoing descriptions, various modifications will be apparent to those skilled in the art; as for example, in place of the detectors which have been described herein, one might -employ la capacitance control circuit, such as one of those described on page 22, et seq., of the publication Handbook o industrial Electronic Circuits 'by Markus and Zelu', published 'in 1948 by Mc- Graw-Hill Book C'ompany, is included herein by reference. Also, as previously mentioned, the invention has numerous other applications outside the particular field which it has been described; as for example, it might be used in the addition of one chemical to another during the course of a chemical manufacturing process in which the product to be added is by weight a function of the Weight vof the initial chemical upon the scale.

It will be apparent that the invention may be used for subtraction as well as for addition. 'For example, a certain amount by weight of a fluid in sa suitable container might be withdrawn from the container. In such a case, it would bedesirable to have the movement of the two arms i2 Vand 'd3 be inthe same direction as the initial movement of the indicator 2li starting from 4the low weight end of their -paths of movement. When lthe arm carrying detector il reaches Lthe indicator arm Sii, a pump inserted in place of solenoid E29 would be energized to start withdrawing the fluid from the container, or if the fluid were in the container under pressure, a valve such -as 127 would release the fluid from lthe container. As the fluid was Withdrawn, the vane 2li would back down the scale and upon reaching detector it, which would be positioned behind detector H by the desired amount, the circuit through binding posts l2! and i2? would be opened so as to stop the motor or -close the valve as the case might be. Theamount of d-iierentia-l between arms i2 and d3 would 'be governed by the size 'of the gear interconnecting the shafts upon which the two arms are attached, as previously described.

While the weight recording portion `of the invention has been described in conjunction with the portions of the invention involving the 'addition or subtraction of material from the scale, it

will be clear that in some embodiments it might be used alone.

To the extent that they are covered by the following claims, all such obvious modifications are believed to be Within the scope of our invention.

We claim:

1. An apparatus for adding an amount of one substance to a second substance wherein the amount to be added is a percentage `of the weight of the second substance, said apparatus `including a scale having a weight supporting `member and a weight responsive member movable along a given path in a given direction in response to the addition of weight to said weight supporting member an amount which is a function of the weight placed upon said weight supporting member, supply means for said one substance, including substance transfer means to add fthe one substance to the second substance and regulating means to control the amount or" said one substance added by said transfer means -to said secthe disclosure of which 12 ond substance, a :pair of detectors, mounting means for said Ydetectors Eto permit said :detectors to 'be moved along said path, power drive 'means connected -to said detector mounting 4means to move said detectors .along said path, and control means connected Ito one of said .detectors fand to said power ldrive means to position -the other of said detectors, upon said one :ori the `detectors reaching `the point on the -path occupied 'by the weight responsive Amember 4and corresponding .to the weight of said second substance placed upon said platform, at a second point ron said path `correspending to :said weight plus said percentage and to incapacitate said driving means, said control means being also connected to said `regulating means to lstart said transfer means said one substance to said second substance upon said `driving means -being incapacitated, said lother detector "being connected vto said control means to stop said transfer means adding said second Asubstance upon said weight responsive member reaching said second point.

2. An apparatus for adding an amount oi one substance to Va second substance wherein the amount to be Aadded 4is a percentage of the weight of the second substance, said apparatus including a scale having a Weight supporti-ng member and aweigh't responsive member movable along a Ygiven path in a given direction response to the addition ci weight to said Weigh-t supporting member an amount which is a function -of the weight placed upon said weight supporting member, supply means forsaid lone 'substance includ- 'ing substance transfer means vto `add the one substance to the second substance and regulating means to control lthe lamount o'i said one substance added by said transfer Lmeans to second substance, Ia ypair oi detectors, mounting means for said detectors to permit said detectors to be moved along said path, power Vdrive means connected to said detector :mounting 4means to move Ysaid Adetectors along said path in a direction opposite to said given direction, and control means connected to .oneof said detectors and to said ,power drive .means to position the other of said detectors, upon said one ci the detectors reaching the point on the path occupied 'by the Weight responsive member and corresponding to .the weight of said second `substance zplace-d upon said weight supportingmer-nber, at a second point on said path corresponding to said 'weight plus said percentage and to incapacitate vsaid power .drive 4means to stop said detectors, said control means being also connected to lsaid regulating means to start said transfer :means adding said one substance -to said second substance upon said driving means being incapacitated, said `other detector 'being connected to said control `means to stop said transfer means adding said second substance upon said weight responsive member reaching said second point.

3. An apparatus for adding an amount of one .substance to a second substance wherein the amount to `be added isa percentage of the weight of the second substance, vsaid apparatus including a scale having a weight supporting member and a weight responsive rotatable member' movable about an axis along a given path `in a given direction in response At-o the addition of weignt to said weight supporting member an amount which is a function of the weight placed upon 'said weight supporting `Vmember, supply means -f-or said one substance including substance :transvfer means to 'add the one substance to the second cubeta .ce regulating means to control the on., substance bv said o said second substance, a pair ting means for said detectors aid detectors to be moved along said i `sis, power drive means includcted to cacli said detector s through a gear train to move abort said axis with the tvvo decaen other an amount representing sai i age f the Weight corresponding to the point on nmpied, at any given by one of said detectors, d control ineens connec'ed to said one of sai-:i detectors and to said drive means to stop said detectors upon said one of said the point on the path corresponding to the weignt of the placed on the wher etna tector is stopped at a second point on corresponding to said tvei percentage, o connected to sid transfer a to said second substance connected transfer Se peint.

e. apparatus for adding an anicunt of :duid to a ineat cut wherein the amount of fluid is a p centage ci the weight of the palatus including a scale lie-ving scale platforin a Weight indicator inovable along a given in eJ given direction in response to tile addition of weight to said platform, duid jection means including a fluid conduit and a valve to control the oiv of fluid through said conduit, a pair of detectors, mounting `means for said detectors to permit said detectors to be moved along said power driving means connected to detector mounting means to move said detectors along said path, and control means connected to one of said detectors and to said power drive to position the other of the detectors, upon said one detector reaching the point on the path corresponding to the weight of the cut and occupied by tlie indicator, at a second point in the path corresponding to said weight plus said percentage and to incapacitate said driving inea-ns, control means being also connect ed to valve to open said valve upon said driv ing roeans being incapacitated, said other detector being connected to said control ineans to close said vaive upon said indicator reaching said second point.

5. in apparatus for riding an amount of liuid to a meat cut wherein the amount of fiuid is a percentage of the weight of the out, said apparatus including a scale having a scale platform and a weight indicator rotatable along a given path in a given direction about an in response to the addition of weight to said platform, fluid injection means including a fluid conduit and a valve to control the dow ci fluid through said conduit, a pair oi detectors, mounting ineens for said detectors to permit said detectors to be moved along sail about said axis, power driving means including a motor connected to each of said detector mounting means through a gear train to inove said detectors about said axis with the two detectors spaced from each other an amount representing said percentage of the Weight corresponding to the point on the path occupied, at any` given instant, by one of said adding said second ctatable rneniber reaching s f' supporting platform I detectors, and control means connected to said one or" said detectors and to said drive ineans to stop said detectors upon said one of said detectors reaching the point on the path corresponding to the weight of the substance placed on the scale whereby the other detector is stopped at a second point on said path corresponding to said Weight or said substance plus said percentage, said control means being also connected to said valve to open said valve upon said detectors being stopped, said other detector being connected to said control means to close said valve upon said indicator reaching said second point.

` 6. An apparatus for use with a scale of the type having a Weight responsive ineinber movable along a given path in response to the weight iinposed upon tbe ight supporting member tnere of an amount wnich is function oi" the -weight imposed on said supporting rn ber and with automatic means to c ige tire of said object, said appa ud a pair of detectors, inountingi for detectors to permit said detectors to ved along drive means connected to Y ing means to piove said detectors alo 1 mountaid path, and control connected to one of said detectors and to s d power drive position the other of said detectors, upon said one of the detectors reaching the point on the patii occupied by the Weight responsive ineinfcer and corresponding to the Weight or the object on said Weight responsive member, at a second point on said path corresponding to weight changed by said amount and to inoapacitate said driving ineans, said control means ng adapted to be connected to said automatic means to initiate the changing in weight of the object by said automatic means upon the driving means being incapacitated, said other detector being connected to said control ineens to stop said automatic means :rorn changing the Weight or the object upon said Weight responsive man ber reaching said second point.

7. An apparatus for use meat cut with a sca-le tl w wht responsive member rotatable along a given ath in a given direction about an in response to the tion of Weight on said platform, fluid injection rneans including valve to control the flow of the iiuid in the processing of a meat cut, said apparatus including a pair of detectors, mounting means for said detectors to permit said detectors to oe oved along said path, power drive means including a rector connected to said detector mounting Lneans through a gear train to rotate said detectors about said axis at different speeds of revolution, said dinerence in speeds o1 revolution being such that the position of one of said detectors on said patli will always be at al point corresponding to a weight on said platform equal to the Weight on the piatiorin corresponding to tbe point cn the path at which the other detector is positioned plus a per centage of said last mentioned trol inea-ns adapted to be connected to said valve, said control means being connected to said drive means and to the other or' the detectors to stop the two detectors upon other detector reaching the point on the path occupie by the weight responsive member and to open said valve to cornmence the addition of uid to the ineat cut, said one detector being connected to said control means to close said valve when said Weight revveight, and con` sponsive member reaches the point fon the scale ccupied by one detector.

8. An Yapparatus for -use in the processing of a meat cut with a scale of the vtype having a weight supporting platform and va weight vresponsive member rotatable along va .given path in a given direction from a Imini-mum weight indication toward a maximum weight indication in response to the addition of `weight on said plait form and iiuid injection means .including a valve to control the iiow of the fluid :applied in the processing oi a meat cut, said apparatus includ ing a pair of detectors, mounting means for said detectors to permit said .detectors to be moved along said path, power drive means including a motor connected to said detector mounting means through a gear train to rotate said .d tectors kat different speeds o1" revolution, said d ence in speeds oi revolution being such that Jhe position of one of said detectors Aon said path will always be at a point corresponding to a weight on said platform equal to the weight .on .the platform corresponding to the point on the path at which the other detector is positioned plus .a given percentage of said last mentioned weight, and control means adapted to :be connected to said valve, said control means being connected to said drive means to normally position ksaid detectors in theportion of the path adjacent :s maximum weight indication, said control means having a starting means to actuate said drive means to move said detectors along lsaid path in the reverse oi" said given direction, with said one of the detectors .moving more slowlv than the other f the detectors, said control means being connected to the other of the detectors to stop the two detectors upon said ,other `detector reaching the point on the path .occupied by the weight responsive member and to open said valve to commence the addition of fluid to `the meat cut, said one detector being connected tc control means to close said valve when said weight responsive member reaches the point on the scale occupied by said one detector and to return said detectors to said portion of the path adjacent maximum weight indication.

9. An apparatus for use in the processing of a meat cut with a scale of the type having a weight supporting platform anda weight responsive member rotatable along a given path in a given direction from a minimum weight indication toward a maximum weight indication in response to the addition of weight on said platform and uid injection means including a valve to control the iioiv o the fluid applied in the processing of a meat cut, said apparatus includ ing a pair of detectors, mounting means for said detectors to permit said detectors to be moved along said path, power drive means including a motor connected to said detector mounting means through a gear train to rotate said detectors at diiierent speeds of revolution, said dif-Y ference in speeds of revolution being such that the position of one of said detectors on said path will always be at a point corresponding to a weight on said platform equal to the weight on the platform corresponding to the point on the path at which the other detector is positioned plus a given percentage of said last mentioned weight, and control means adapted to be con nected to said valve, said control means being connected to said drive means to normally posiw tion said detectors in the portion of the path adjacent said maximum weight indication, sai-d control means having a starting means to actuate said drive `:means to l-move said detectors along said path in the reverse of said given direction, with Vsaid one of the detectors moving more slowly than the other of the detectors, said control means being connected to the other `oi the detectors to stop the two detectors upon said other detector reaching the point on the path occupied by the weight responsive member and to open said valve to commence the addition of fluid to the meat cut, said control means including a control member by which said addition of uid may be manually stopped, said one detector being connected to said control means to close said valve when said weight responsive member reaches the point on the scale occupied by said one detector and to return said detectors to said portion oi the path adjacent said inanimum weight indication, said control mem-beit, when manually operated to stop said flow foi fluid, incapacitating said control means to render saidcontrol means inoperative to return said detectors to said portion of said path adjacent said maximum Weight indication should said weight responsive member reach the point on the scale occupied by said .one detector.

1G. An apparatus for adding an amount of one substance to a second substance wherein the amount to be added is a percentage of the weight of the second substance, said apparatus including a scale having a weight supporting member and a weight responsive member movable .along a given path in a given ydirection in response to the addition of weight to said weight supporting member an amount which is a function oi the weight placed upon said weight supporting member, supply .means for `Vsaid one substance including substance transfer means to add the one substance to the second substance and regun lating means to control the amount or" said one substance added by said transfer means to said second substance, a pair of detectors, mounting means for said detectors to permit said detectors to be moved along said path, power drive means connected to said detector mounting means to move said detectors along said path in a direction opposite to said given direction, control means connected to one of said detectors and to said power drive to position the other of said detectors, upon said one or the detectors reaching the point on the path occupied by the weight responsive member and corresponding to the weight of the second substance placed upon said weight supporting member, at a second point on said path corresponding to said weight plus said percentage and to incapacitate the power drive means to stop said detectors, and automatically controlled weight recording means connected to said power drive means to record the weight corresponding to the point on the path at which said one detector stops, said control means being connected to said weight recording means to actuate said means to record the weight at the time said detectors are stopped, said control means being also connected to said regulating means to start ,said transfer means adding said one substance to said second sulstance upon said driving means being incapacitated, said other detector being connected to said control means to stop said transfer means adding said second substance upon said weight responsive member reaching said second point.

1l. An apparatus for adding an amount of one substance to a second substance wherein the amount to be added is a percentage of the Weight oi the second substance, said apparatus including a scale having a Weight supporting member and a weight responsive rotatable member movable about an axis along a given path in a given direction in response to the addition of Weight to said Weight supporting member an amount which is a function of the Weight placed upon said Weight supporting member, supply means for said one substance including substance transfer means to add the one substance to the second substance and regulating means to control the amount of said one substance added by said transfer means to said second substance, a pair of detectors, mounting means for said detectors to permit said detectors to be moved along said path about said axis, power drive means including a motor connected to each of said detector mounting means through a gear train to move said detectors about said axis with the two detectors spaced from each other an amount representing said percentage of the weight corresponding to the point on the path occupied, at any given instant, by one of said detectors, control means connected to said one of said detectors and to said drive means to stop said detectors upon said one of said detectors reaching the point on the path corresponding to the weight of the substance placed on the scale whereby the other detector is stopped at a second point on said path corresponding to said weight of said substance plus said percentage, a rotatably mounted printing wheel having Weight-indicating indicia thereon, said Wheel being connected to said drive means for rotation thereby, a platen and electrically actuated mounting means for said platen to bring the platen in contact With a portion of the wheel to record the indicia appearing at said portion, said control means being also connected to said regulating means and to said electrically actuated mounting means to start said transfer means adding said one substance to said second substance and to bring said platen in contact with said wheel upon said detectors being stopped, said other detector being connected to said control means to stop said transfer means adding said second substance upon said rotatable mem.. ber reaching said second point.

12. An apparatus for use with a scale of the type having a weight responsive member moveable along a given path in response to a change in Weight upon the weight supporting member thereof an amount which is a function of the Weight imposed upon the Weight supporting member, said apparatus including a detector, mounting means for said detector to permit said detector to be moved along said path about said axis free of said weight responsive member, power drive means including a motor connected to said mounting means to move said detector about said axis, control means connected to one of said detectors and to said drive means to stop said detector upon said detector reaching the point on the path occupied by said responsive member, a rotatably mounted printing Wheel having indicia thereon corresponding to the Weights supportable by said scale, said wheel being connected to said drive means for rotation thereby, a platen, and electrically actuated mounting means for said platen to bring the platen in contact with a portion of the wheel to record the indicia appearing at said portion, said control means being connected to said electrically actuated mounting means to bring said platen in contact with said Wheel upon said detector being stopped.

BERNARD T. HENSGEN. HOWARD G. REICHEL.

References Cited in the file 0f this patent UNITED STATES PATENTS Numb er 

